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US 2009/0291284 A1Published application
Polypropylene-Based Shrink Films
AssigneeExxonMobil Oil Corporation
InventorsLori A. Frauenhofer, Lindsay J. Mendes, Eric W. Bender
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AssigneeExxonMobil Oil Corporation
InventorsLori A. Frauenhofer, Lindsay J. Mendes, Eric W. Bender
Estimating the term…
In one aspect is provided a film, a shrink sleeve film in a particular embodiment, comprising at least one core layer, one skin layer, and optionally one tie layer between the two, wherein the core comprises from 0 to 30 wt % polypropylene by weight of the core layer, and from 70 to 100 wt % of a random propylene-α-olefin copolymer having within the range of from 1 to 10 wt % α-olefins, the α-olefin selected from the group consisting of ethylene and C4 to C12 α-olefins, and having an MWD within the range of from 1.2 to 4.5 and a melting point within the range of from 110 to 150° C.; wherein the film possesses a TD Tensile Strength of from 100 to 400 MPa and a MD Tensile Strength of from 20 to 60 MPa. In a particular embodiment, the at least one skin layer comprises a solvent sealable material.
A film comprising at least one skin layer, at least one core layer, and optionally at least one tie layer between each, wherein, independently,
A process for forming a biaxially oriented film comprising coextruding at least one core layer, one skin layer, and optionally one tie layer between the two to form an unoriented film, followed by drawing the unoriented film from 1.1 to 2.5-fold in the machine direction and from 4 to 10-fold in the transverse direction in a tenter apparatus having at least three zones;
A biaxially oriented film comprising at least one skin layer, at least one core layer, and optionally at least one tie layer between each, wherein, independently,
Dependencies are inferred from the claim text.